Optoma ZK451 4500-Lumen UHD 4K Laser DLP Projector

Classrooms and meeting rooms get a sharp UHD image from the Optoma ZK451, a compact 4,500-lumen DuraCore laser DLP projector.

It supports HDR and HLG and has a 1.6x zoom lens, and Robertson AV can quote multi-room orders.

Key Features

• Brightness: 4,500 lumens
• Resolution: UHD (3840 x 2160); HDR and HLG compatible
• Laser light source: 30,000 hours maintenance-free
• Zoom lens: 1.6x manual zoom, throw ratio 1.4:1 – 2.24:1
• Install anywhere: 24/7, 360-degree and portrait operation
• Connections: 2 x HDMI 2.0 (one eARC), 3.5 mm audio out, 2 USB-A power, RS-232, RJ-45, 12V trigger, 3D sync
• Built-in sound: 15 W mono speaker
• HDR: HDR and HLG compatible

Ideal For

• Classrooms: long laser life
• Meeting rooms: compact body
• Training rooms: easy installation

Optoma ZK451 4,500-Lumen 4K UHD Laser DLP Projector Specifications

Optoma ZK451 technical specifications, grouped by feature

Specification	Details
Picture & Optics
Resolution	UHD (3840 x 2160); HDR and HLG compatible
Brightness	4,500 lumens
Contrast Ratio	300,000:1
Throw Ratio	1.4:1 – 2.24:1
Zoom	1.6x manual
Projection Distance	0.93 m – 9.3 m
Keystone Correction	Horizontal and vertical +/-30 degrees
Light Source
Light Source	Laser, 30,000 hours
Audio
Speaker	1 x 15 W
Power & Environment
Noise Level	29 dB min; 35 dB max
Physical
Dimensions (W x D x H)	274 x 216 x 114 mm
Net Weight	2.9 kg
Additional Features
Display Technology	DLP
Focal Length	20.91 – 32.62 mm
Screen Size	30 – 300 in (0.76 – 7.62 m)
Connections	2 x HDMI 2.0 (one eARC), 3.5 mm audio out, 2 USB-A power, RS-232, RJ-45, 12V trigger, 3D sync
Operation	24/7, 360-degree
Operating Conditions	0 to 40°C, up to 80% humidity
Dust Protection	IP6X certified
General
Brand	Optoma
Model	ZK451

Specifications are verified against the Optoma manufacturer data sheet (October 2026) and may change without notice. Confirm critical requirements with Optoma before ordering.

What’s in the Box

• AC power cord
• Remote control
• 2 AAA batteries
• Basic user manual

Warranty & Support

Planning a multi-room or multi-site install? Request a quote from Robertson AV for 5 or more units, or call us at 800-919-6548 or email orders@robertsonav.com. Free ground shipping on U.S. orders. Schools, businesses, government agencies and houses of worship: ask us about project and quantity pricing.

Optoma sheet is the Europe/global version; power details are omitted.